1 # Roundup Issue Tracker configuration support
2 #
3 # $Id: configuration.py,v 1.51 2008-09-01 02:30:06 richard Exp $
4 #
5 __docformat__ = "restructuredtext"
7 import ConfigParser
8 import getopt
9 import imp
10 import logging, logging.config
11 import os
12 import re
13 import sys
14 import time
15 import smtplib
17 import roundup.date
19 # XXX i don't think this module needs string translation, does it?
21 ### Exceptions
23 class ConfigurationError(Exception):
24 pass
26 class NoConfigError(ConfigurationError):
28 """Raised when configuration loading fails
30 Constructor parameters: path to the directory that was used as HOME
32 """
34 def __str__(self):
35 return "No valid configuration files found in directory %s" \
36 % self.args[0]
38 class InvalidOptionError(ConfigurationError, KeyError, AttributeError):
40 """Attempted access to non-existing configuration option
42 Configuration options may be accessed as configuration object
43 attributes or items. So this exception instances also are
44 instances of KeyError (invalid item access) and AttributeError
45 (invalid attribute access).
47 Constructor parameter: option name
49 """
51 def __str__(self):
52 return "Unsupported configuration option: %s" % self.args[0]
54 class OptionValueError(ConfigurationError, ValueError):
56 """Raised upon attempt to assign an invalid value to config option
58 Constructor parameters: Option instance, offending value
59 and optional info string.
61 """
63 def __str__(self):
64 _args = self.args
65 _rv = "Invalid value for %(option)s: %(value)r" % {
66 "option": _args[0].name, "value": _args[1]}
67 if len(_args) > 2:
68 _rv += "\n".join(("",) + _args[2:])
69 return _rv
71 class OptionUnsetError(ConfigurationError):
73 """Raised when no Option value is available - neither set, nor default
75 Constructor parameters: Option instance.
77 """
79 def __str__(self):
80 return "%s is not set and has no default" % self.args[0].name
82 class UnsetDefaultValue:
84 """Special object meaning that default value for Option is not specified"""
86 def __str__(self):
87 return "NO DEFAULT"
89 NODEFAULT = UnsetDefaultValue()
91 ### Option classes
93 class Option:
95 """Single configuration option.
97 Options have following attributes:
99 config
100 reference to the containing Config object
101 section
102 name of the section in the tracker .ini file
103 setting
104 option name in the tracker .ini file
105 default
106 default option value
107 description
108 option description. Makes a comment in the tracker .ini file
109 name
110 "canonical name" of the configuration option.
111 For items in the 'main' section this is uppercased
112 'setting' name. For other sections, the name is
113 composed of the section name and the setting name,
114 joined with underscore.
115 aliases
116 list of "also known as" names. Used to access the settings
117 by old names used in previous Roundup versions.
118 "Canonical name" is also included.
120 The name and aliases are forced to be uppercase.
121 The setting name is forced to lowercase.
123 """
125 class_description = None
127 def __init__(self, config, section, setting,
128 default=NODEFAULT, description=None, aliases=None
129 ):
130 self.config = config
131 self.section = section
132 self.setting = setting.lower()
133 self.default = default
134 self.description = description
135 self.name = setting.upper()
136 if section != "main":
137 self.name = "_".join((section.upper(), self.name))
138 if aliases:
139 self.aliases = [alias.upper() for alias in list(aliases)]
140 else:
141 self.aliases = []
142 self.aliases.insert(0, self.name)
143 # convert default to internal representation
144 if default is NODEFAULT:
145 _value = default
146 else:
147 _value = self.str2value(default)
148 # value is private. use get() and set() to access
149 self._value = self._default_value = _value
151 def str2value(self, value):
152 """Return 'value' argument converted to internal representation"""
153 return value
155 def _value2str(self, value):
156 """Return 'value' argument converted to external representation
158 This is actual conversion method called only when value
159 is not NODEFAULT. Heirs with different conversion rules
160 override this method, not the public .value2str().
162 """
163 return str(value)
165 def value2str(self, value=NODEFAULT, current=0):
166 """Return 'value' argument converted to external representation
168 If 'current' is True, use current option value.
170 """
171 if current:
172 value = self._value
173 if value is NODEFAULT:
174 return str(value)
175 else:
176 return self._value2str(value)
178 def get(self):
179 """Return current option value"""
180 if self._value is NODEFAULT:
181 raise OptionUnsetError(self)
182 return self._value
184 def set(self, value):
185 """Update the value"""
186 self._value = self.str2value(value)
188 def reset(self):
189 """Reset the value to default"""
190 self._value = self._default_value
192 def isdefault(self):
193 """Return True if current value is the default one"""
194 return self._value == self._default_value
196 def isset(self):
197 """Return True if the value is available (either set or default)"""
198 return self._value != NODEFAULT
200 def __str__(self):
201 return self.value2str(self._value)
203 def __repr__(self):
204 if self.isdefault():
205 _format = "<%(class)s %(name)s (default): %(value)s>"
206 else:
207 _format = "<%(class)s %(name)s (default: %(default)s): %(value)s>"
208 return _format % {
209 "class": self.__class__.__name__,
210 "name": self.name,
211 "default": self.value2str(self._default_value),
212 "value": self.value2str(self._value),
213 }
215 def format(self):
216 """Return .ini file fragment for this option"""
217 _desc_lines = []
218 for _description in (self.description, self.class_description):
219 if _description:
220 _desc_lines.extend(_description.split("\n"))
221 # comment out the setting line if there is no value
222 if self.isset():
223 _is_set = ""
224 else:
225 _is_set = "#"
226 _rv = "# %(description)s\n# Default: %(default)s\n" \
227 "%(is_set)s%(name)s = %(value)s\n" % {
228 "description": "\n# ".join(_desc_lines),
229 "default": self.value2str(self._default_value),
230 "name": self.setting,
231 "value": self.value2str(self._value),
232 "is_set": _is_set
233 }
234 return _rv
236 def load_ini(self, config):
237 """Load value from ConfigParser object"""
238 if config.has_option(self.section, self.setting):
239 self.set(config.get(self.section, self.setting))
241 def load_pyconfig(self, config):
242 """Load value from old-style config (python module)"""
243 for _name in self.aliases:
244 if hasattr(config, _name):
245 self.set(getattr(config, _name))
246 break
248 class BooleanOption(Option):
250 """Boolean option: yes or no"""
252 class_description = "Allowed values: yes, no"
254 def _value2str(self, value):
255 if value:
256 return "yes"
257 else:
258 return "no"
260 def str2value(self, value):
261 if type(value) == type(""):
262 _val = value.lower()
263 if _val in ("yes", "true", "on", "1"):
264 _val = 1
265 elif _val in ("no", "false", "off", "0"):
266 _val = 0
267 else:
268 raise OptionValueError(self, value, self.class_description)
269 else:
270 _val = value and 1 or 0
271 return _val
273 class WordListOption(Option):
275 """List of strings"""
277 class_description = "Allowed values: comma-separated list of words"
279 def _value2str(self, value):
280 return ','.join(value)
282 def str2value(self, value):
283 return value.split(',')
285 class RunDetectorOption(Option):
287 """When a detector is run: always, never or for new items only"""
289 class_description = "Allowed values: yes, no, new"
291 def str2value(self, value):
292 _val = value.lower()
293 if _val in ("yes", "no", "new"):
294 return _val
295 else:
296 raise OptionValueError(self, value, self.class_description)
298 class MailAddressOption(Option):
300 """Email address
302 Email addresses may be either fully qualified or local.
303 In the latter case MAIL_DOMAIN is automatically added.
305 """
307 def get(self):
308 _val = Option.get(self)
309 if "@" not in _val:
310 _val = "@".join((_val, self.config["MAIL_DOMAIN"]))
311 return _val
313 class FilePathOption(Option):
315 """File or directory path name
317 Paths may be either absolute or relative to the HOME.
319 """
321 class_description = "The path may be either absolute or relative\n" \
322 "to the directory containig this config file."
324 def get(self):
325 _val = Option.get(self)
326 if _val and not os.path.isabs(_val):
327 _val = os.path.join(self.config["HOME"], _val)
328 return _val
330 class FloatNumberOption(Option):
332 """Floating point numbers"""
334 def str2value(self, value):
335 try:
336 return float(value)
337 except ValueError:
338 raise OptionValueError(self, value,
339 "Floating point number required")
341 def _value2str(self, value):
342 _val = str(value)
343 # strip fraction part from integer numbers
344 if _val.endswith(".0"):
345 _val = _val[:-2]
346 return _val
348 class IntegerNumberOption(Option):
350 """Integer numbers"""
352 def str2value(self, value):
353 try:
354 return int(value)
355 except ValueError:
356 raise OptionValueError(self, value, "Integer number required")
358 class OctalNumberOption(Option):
360 """Octal Integer numbers"""
362 def str2value(self, value):
363 try:
364 return int(value, 8)
365 except ValueError:
366 raise OptionValueError(self, value, "Octal Integer number required")
368 def _value2str(self, value):
369 return oct(value)
371 class NullableOption(Option):
373 """Option that is set to None if its string value is one of NULL strings
375 Default nullable strings list contains empty string only.
376 There is constructor parameter allowing to specify different nullables.
378 Conversion to external representation returns the first of the NULL
379 strings list when the value is None.
381 """
383 NULL_STRINGS = ("",)
385 def __init__(self, config, section, setting,
386 default=NODEFAULT, description=None, aliases=None,
387 null_strings=NULL_STRINGS
388 ):
389 self.null_strings = list(null_strings)
390 Option.__init__(self, config, section, setting, default,
391 description, aliases)
393 def str2value(self, value):
394 if value in self.null_strings:
395 return None
396 else:
397 return value
399 def _value2str(self, value):
400 if value is None:
401 return self.null_strings[0]
402 else:
403 return value
405 class NullableFilePathOption(NullableOption, FilePathOption):
407 # .get() and class_description are from FilePathOption,
408 get = FilePathOption.get
409 class_description = FilePathOption.class_description
410 # everything else taken from NullableOption (inheritance order)
412 class TimezoneOption(Option):
414 class_description = \
415 "If pytz module is installed, value may be any valid\n" \
416 "timezone specification (e.g. EET or Europe/Warsaw).\n" \
417 "If pytz is not installed, value must be integer number\n" \
418 "giving local timezone offset from UTC in hours."
420 def str2value(self, value):
421 try:
422 roundup.date.get_timezone(value)
423 except KeyError:
424 raise OptionValueError(self, value,
425 "Timezone name or numeric hour offset required")
426 return value
428 class RegExpOption(Option):
430 """Regular Expression option (value is Regular Expression Object)"""
432 class_description = "Value is Python Regular Expression (UTF8-encoded)."
434 RE_TYPE = type(re.compile(""))
436 def __init__(self, config, section, setting,
437 default=NODEFAULT, description=None, aliases=None,
438 flags=0,
439 ):
440 self.flags = flags
441 Option.__init__(self, config, section, setting, default,
442 description, aliases)
444 def _value2str(self, value):
445 assert isinstance(value, self.RE_TYPE)
446 return value.pattern
448 def str2value(self, value):
449 if not isinstance(value, unicode):
450 value = str(value)
451 # if it is 7-bit ascii, use it as string,
452 # otherwise convert to unicode.
453 try:
454 value.decode("ascii")
455 except UnicodeError:
456 value = value.decode("utf-8")
457 return re.compile(value, self.flags)
459 ### Main configuration layout.
460 # Config is described as a sequence of sections,
461 # where each section name is followed by a sequence
462 # of Option definitions. Each Option definition
463 # is a sequence containing class name and constructor
464 # parameters, starting from the setting name:
465 # setting, default, [description, [aliases]]
466 # Note: aliases should only exist in historical options for backwards
467 # compatibility - new options should *not* have aliases!
468 SETTINGS = (
469 ("main", (
470 (FilePathOption, "database", "db", "Database directory path."),
471 (FilePathOption, "templates", "html",
472 "Path to the HTML templates directory."),
473 (NullableFilePathOption, "static_files", "",
474 "Path to directory holding additional static files\n"
475 "available via Web UI. This directory may contain\n"
476 "sitewide images, CSS stylesheets etc. and is searched\n"
477 "for these files prior to the TEMPLATES directory\n"
478 "specified above. If this option is not set, all static\n"
479 "files are taken from the TEMPLATES directory"),
480 (MailAddressOption, "admin_email", "roundup-admin",
481 "Email address that roundup will complain to if it runs\n"
482 "into trouble.\n"
483 "If no domain is specified then the config item\n"
484 "mail -> domain is added."),
485 (MailAddressOption, "dispatcher_email", "roundup-admin",
486 "The 'dispatcher' is a role that can get notified\n"
487 "of new items to the database.\n"
488 "It is used by the ERROR_MESSAGES_TO config setting.\n"
489 "If no domain is specified then the config item\n"
490 "mail -> domain is added."),
491 (Option, "email_from_tag", "",
492 "Additional text to include in the \"name\" part\n"
493 "of the From: address used in nosy messages.\n"
494 "If the sending user is \"Foo Bar\", the From: line\n"
495 "is usually: \"Foo Bar\" <issue_tracker@tracker.example>\n"
496 "the EMAIL_FROM_TAG goes inside the \"Foo Bar\" quotes like so:\n"
497 "\"Foo Bar EMAIL_FROM_TAG\" <issue_tracker@tracker.example>"),
498 (Option, "new_web_user_roles", "User",
499 "Roles that a user gets when they register"
500 " with Web User Interface.\n"
501 "This is a comma-separated string of role names"
502 " (e.g. 'Admin,User')."),
503 (Option, "new_email_user_roles", "User",
504 "Roles that a user gets when they register"
505 " with Email Gateway.\n"
506 "This is a comma-separated string of role names"
507 " (e.g. 'Admin,User')."),
508 (Option, "error_messages_to", "user",
509 # XXX This description needs better wording,
510 # with explicit allowed values list.
511 "Send error message emails to the dispatcher, user, or both?\n"
512 "The dispatcher is configured using the DISPATCHER_EMAIL"
513 " setting."),
514 (Option, "html_version", "html4",
515 "HTML version to generate. The templates are html4 by default.\n"
516 "If you wish to make them xhtml, then you'll need to change this\n"
517 "var to 'xhtml' too so all auto-generated HTML is compliant.\n"
518 "Allowed values: html4, xhtml"),
519 (TimezoneOption, "timezone", "UTC", "Default timezone offset,"
520 " applied when user's timezone is not set.",
521 ["DEFAULT_TIMEZONE"]),
522 (BooleanOption, "instant_registration", "no",
523 "Register new users instantly, or require confirmation via\n"
524 "email?"),
525 (BooleanOption, "email_registration_confirmation", "yes",
526 "Offer registration confirmation by email or only through the web?"),
527 (WordListOption, "indexer_stopwords", "",
528 "Additional stop-words for the full-text indexer specific to\n"
529 "your tracker. See the indexer source for the default list of\n"
530 "stop-words (eg. A,AND,ARE,AS,AT,BE,BUT,BY, ...)"),
531 (OctalNumberOption, "umask", "02",
532 "Defines the file creation mode mask."),
533 )),
534 ("tracker", (
535 (Option, "name", "Roundup issue tracker",
536 "A descriptive name for your roundup instance."),
537 (Option, "web", NODEFAULT,
538 "The web address that the tracker is viewable at.\n"
539 "This will be included in information"
540 " sent to users of the tracker.\n"
541 "The URL MUST include the cgi-bin part or anything else\n"
542 "that is required to get to the home page of the tracker.\n"
543 "You MUST include a trailing '/' in the URL."),
544 (MailAddressOption, "email", "issue_tracker",
545 "Email address that mail to roundup should go to.\n"
546 "If no domain is specified then mail_domain is added."),
547 (NullableOption, "language", "",
548 "Default locale name for this tracker.\n"
549 "If this option is not set, the language is determined\n"
550 "by OS environment variable LANGUAGE, LC_ALL, LC_MESSAGES,\n"
551 "or LANG, in that order of preference."),
552 )),
553 ("web", (
554 (BooleanOption, "allow_html_file", "no",
555 "Setting this option enables Roundup to serve uploaded HTML\n"
556 "file content *as HTML*. This is a potential security risk\n"
557 "and is therefore disabled by default. Set to 'yes' if you\n"
558 "trust *all* users uploading content to your tracker."),
559 (BooleanOption, 'http_auth', "yes",
560 "Whether to use HTTP Basic Authentication, if present.\n"
561 "Roundup will use either the REMOTE_USER or HTTP_AUTHORIZATION\n"
562 "variables supplied by your web server (in that order).\n"
563 "Set this option to 'no' if you do not wish to use HTTP Basic\n"
564 "Authentication in your web interface."),
565 (BooleanOption, 'use_browser_language', "yes",
566 "Whether to use HTTP Accept-Language, if present.\n"
567 "Browsers send a language-region preference list.\n"
568 "It's usually set in the client's browser or in their\n"
569 "Operating System.\n"
570 "Set this option to 'no' if you want to ignore it."),
571 (BooleanOption, "debug", "no",
572 "Setting this option makes Roundup display error tracebacks\n"
573 "in the user's browser rather than emailing them to the\n"
574 "tracker admin."),
575 )),
576 ("rdbms", (
577 (Option, 'name', 'roundup',
578 "Name of the database to use.",
579 ['MYSQL_DBNAME']),
580 (NullableOption, 'host', 'localhost',
581 "Database server host.",
582 ['MYSQL_DBHOST']),
583 (NullableOption, 'port', '',
584 "TCP port number of the database server.\n"
585 "Postgresql usually resides on port 5432 (if any),\n"
586 "for MySQL default port number is 3306.\n"
587 "Leave this option empty to use backend default"),
588 (NullableOption, 'user', 'roundup',
589 "Database user name that Roundup should use.",
590 ['MYSQL_DBUSER']),
591 (NullableOption, 'password', 'roundup',
592 "Database user password.",
593 ['MYSQL_DBPASSWORD']),
594 (NullableOption, 'read_default_file', '~/.my.cnf',
595 "Name of the MySQL defaults file.\n"
596 "Only used in MySQL connections."),
597 (NullableOption, 'read_default_group', 'roundup',
598 "Name of the group to use in the MySQL defaults file (.my.cnf).\n"
599 "Only used in MySQL connections."),
600 (IntegerNumberOption, 'cache_size', '100',
601 "Size of the node cache (in elements)"),
602 ), "Settings in this section are used"
603 " by RDBMS backends only"
604 ),
605 ("logging", (
606 (FilePathOption, "config", "",
607 "Path to configuration file for standard Python logging module.\n"
608 "If this option is set, logging configuration is loaded\n"
609 "from specified file; options 'filename' and 'level'\n"
610 "in this section are ignored."),
611 (FilePathOption, "filename", "",
612 "Log file name for minimal logging facility built into Roundup.\n"
613 "If no file name specified, log messages are written on stderr.\n"
614 "If above 'config' option is set, this option has no effect."),
615 (Option, "level", "ERROR",
616 "Minimal severity level of messages written to log file.\n"
617 "If above 'config' option is set, this option has no effect.\n"
618 "Allowed values: DEBUG, INFO, WARNING, ERROR"),
619 )),
620 ("mail", (
621 (Option, "domain", NODEFAULT,
622 "The email domain that admin_email, issue_tracker and\n"
623 "dispatcher_email belong to.\n"
624 "This domain is added to those config items if they don't\n"
625 "explicitly include a domain.\n"
626 "Do not include the '@' symbol."),
627 (Option, "host", NODEFAULT,
628 "SMTP mail host that roundup will use to send mail",
629 ["MAILHOST"],),
630 (Option, "username", "", "SMTP login name.\n"
631 "Set this if your mail host requires authenticated access.\n"
632 "If username is not empty, password (below) MUST be set!"),
633 (Option, "password", NODEFAULT, "SMTP login password.\n"
634 "Set this if your mail host requires authenticated access."),
635 (IntegerNumberOption, "port", smtplib.SMTP_PORT,
636 "Default port to send SMTP on.\n"
637 "Set this if your mail server runs on a different port."),
638 (NullableOption, "local_hostname", '',
639 "The local hostname to use during SMTP transmission.\n"
640 "Set this if your mail server requires something specific."),
641 (BooleanOption, "tls", "no",
642 "If your SMTP mail host provides or requires TLS\n"
643 "(Transport Layer Security) then set this option to 'yes'."),
644 (NullableFilePathOption, "tls_keyfile", "",
645 "If TLS is used, you may set this option to the name\n"
646 "of a PEM formatted file that contains your private key."),
647 (NullableFilePathOption, "tls_certfile", "",
648 "If TLS is used, you may set this option to the name\n"
649 "of a PEM formatted certificate chain file."),
650 (Option, "charset", "utf-8",
651 "Character set to encode email headers with.\n"
652 "We use utf-8 by default, as it's the most flexible.\n"
653 "Some mail readers (eg. Eudora) can't cope with that,\n"
654 "so you might need to specify a more limited character set\n"
655 "(eg. iso-8859-1).",
656 ["EMAIL_CHARSET"]),
657 (FilePathOption, "debug", "",
658 "Setting this option makes Roundup to write all outgoing email\n"
659 "messages to this file *instead* of sending them.\n"
660 "This option has the same effect as environment variable"
661 " SENDMAILDEBUG.\nEnvironment variable takes precedence."),
662 (BooleanOption, "add_authorinfo", "yes",
663 "Add a line with author information at top of all messages\n"
664 "sent by roundup"),
665 (BooleanOption, "add_authoremail", "yes",
666 "Add the mail address of the author to the author information at\n"
667 "the top of all messages.\n"
668 "If this is false but add_authorinfo is true, only the name\n"
669 "of the actor is added which protects the mail address of the\n"
670 "actor from being exposed at mail archives, etc."),
671 ), "Outgoing email options.\nUsed for nozy messages and approval requests"),
672 ("mailgw", (
673 (BooleanOption, "keep_quoted_text", "yes",
674 "Keep email citations when accepting messages.\n"
675 "Setting this to \"no\" strips out \"quoted\" text"
676 " from the message.\n"
677 "Signatures are also stripped.",
678 ["EMAIL_KEEP_QUOTED_TEXT"]),
679 (BooleanOption, "leave_body_unchanged", "no",
680 "Preserve the email body as is - that is,\n"
681 "keep the citations _and_ signatures.",
682 ["EMAIL_LEAVE_BODY_UNCHANGED"]),
683 (Option, "default_class", "issue",
684 "Default class to use in the mailgw\n"
685 "if one isn't supplied in email subjects.\n"
686 "To disable, leave the value blank.",
687 ["MAIL_DEFAULT_CLASS"]),
688 (NullableOption, "language", "",
689 "Default locale name for the tracker mail gateway.\n"
690 "If this option is not set, mail gateway will use\n"
691 "the language of the tracker instance."),
692 (Option, "subject_prefix_parsing", "strict",
693 "Controls the parsing of the [prefix] on subject\n"
694 "lines in incoming emails. \"strict\" will return an\n"
695 "error to the sender if the [prefix] is not recognised.\n"
696 "\"loose\" will attempt to parse the [prefix] but just\n"
697 "pass it through as part of the issue title if not\n"
698 "recognised. \"none\" will always pass any [prefix]\n"
699 "through as part of the issue title."),
700 (Option, "subject_suffix_parsing", "strict",
701 "Controls the parsing of the [suffix] on subject\n"
702 "lines in incoming emails. \"strict\" will return an\n"
703 "error to the sender if the [suffix] is not recognised.\n"
704 "\"loose\" will attempt to parse the [suffix] but just\n"
705 "pass it through as part of the issue title if not\n"
706 "recognised. \"none\" will always pass any [suffix]\n"
707 "through as part of the issue title."),
708 (Option, "subject_suffix_delimiters", "[]",
709 "Defines the brackets used for delimiting the prefix and \n"
710 'suffix in a subject line. The presence of "suffix" in\n'
711 "the config option name is a historical artifact and may\n"
712 "be ignored."),
713 (Option, "subject_content_match", "always",
714 "Controls matching of the incoming email subject line\n"
715 "against issue titles in the case where there is no\n"
716 "designator [prefix]. \"never\" turns off matching.\n"
717 "\"creation + interval\" or \"activity + interval\"\n"
718 "will match an issue for the interval after the issue's\n"
719 "creation or last activity. The interval is a standard\n"
720 "Roundup interval."),
721 (RegExpOption, "refwd_re", "(\s*\W?\s*(fw|fwd|re|aw|sv|ang)\W)+",
722 "Regular expression matching a single reply or forward\n"
723 "prefix prepended by the mailer. This is explicitly\n"
724 "stripped from the subject during parsing."),
725 (RegExpOption, "origmsg_re",
726 "^[>|\s]*-----\s?Original Message\s?-----$",
727 "Regular expression matching start of an original message\n"
728 "if quoted the in body."),
729 (RegExpOption, "sign_re", "^[>|\s]*-- ?$",
730 "Regular expression matching the start of a signature\n"
731 "in the message body."),
732 (RegExpOption, "eol_re", r"[\r\n]+",
733 "Regular expression matching end of line."),
734 (RegExpOption, "blankline_re", r"[\r\n]+\s*[\r\n]+",
735 "Regular expression matching a blank line."),
736 (BooleanOption, "ignore_alternatives", "no",
737 "When parsing incoming mails, roundup uses the first\n"
738 "text/plain part it finds. If this part is inside a\n"
739 "multipart/alternative, and this option is set, all other\n"
740 "parts of the multipart/alternative are ignored. The default\n"
741 "is to keep all parts and attach them to the issue."),
742 ), "Roundup Mail Gateway options"),
743 ("pgp", (
744 (BooleanOption, "enable", "no",
745 "Enable PGP processing. Requires pyme."),
746 (NullableOption, "roles", "",
747 "If specified, a comma-separated list of roles to perform\n"
748 "PGP processing on. If not specified, it happens for all\n"
749 "users."),
750 (NullableOption, "homedir", "",
751 "Location of PGP directory. Defaults to $HOME/.gnupg if\n"
752 "not specified."),
753 ), "OpenPGP mail processing options"),
754 ("nosy", (
755 (RunDetectorOption, "messages_to_author", "no",
756 "Send nosy messages to the author of the message.",
757 ["MESSAGES_TO_AUTHOR"]),
758 (Option, "signature_position", "bottom",
759 "Where to place the email signature.\n"
760 "Allowed values: top, bottom, none",
761 ["EMAIL_SIGNATURE_POSITION"]),
762 (RunDetectorOption, "add_author", "new",
763 "Does the author of a message get placed on the nosy list\n"
764 "automatically? If 'new' is used, then the author will\n"
765 "only be added when a message creates a new issue.\n"
766 "If 'yes', then the author will be added on followups too.\n"
767 "If 'no', they're never added to the nosy.\n",
768 ["ADD_AUTHOR_TO_NOSY"]),
769 (RunDetectorOption, "add_recipients", "new",
770 "Do the recipients (To:, Cc:) of a message get placed on the\n"
771 "nosy list? If 'new' is used, then the recipients will\n"
772 "only be added when a message creates a new issue.\n"
773 "If 'yes', then the recipients will be added on followups too.\n"
774 "If 'no', they're never added to the nosy.\n",
775 ["ADD_RECIPIENTS_TO_NOSY"]),
776 (Option, "email_sending", "single",
777 "Controls the email sending from the nosy reactor. If\n"
778 "\"multiple\" then a separate email is sent to each\n"
779 "recipient. If \"single\" then a single email is sent with\n"
780 "each recipient as a CC address."),
781 (IntegerNumberOption, "max_attachment_size", sys.maxint,
782 "Attachments larger than the given number of bytes\n"
783 "won't be attached to nosy mails. They will be replaced by\n"
784 "a link to the tracker's download page for the file.")
785 ), "Nosy messages sending"),
786 )
788 ### Configuration classes
790 class Config:
792 """Base class for configuration objects.
794 Configuration options may be accessed as attributes or items
795 of instances of this class. All option names are uppercased.
797 """
799 # Config file name
800 INI_FILE = "config.ini"
802 # Object attributes that should not be taken as common configuration
803 # options in __setattr__ (most of them are initialized in constructor):
804 # builtin pseudo-option - package home directory
805 HOME = "."
806 # names of .ini file sections, in order
807 sections = None
808 # section comments
809 section_descriptions = None
810 # lists of option names for each section, in order
811 section_options = None
812 # mapping from option names and aliases to Option instances
813 options = None
814 # actual name of the config file. set on load.
815 filepath = os.path.join(HOME, INI_FILE)
817 def __init__(self, config_path=None, layout=None, settings={}):
818 """Initialize confing instance
820 Parameters:
821 config_path:
822 optional directory or file name of the config file.
823 If passed, load the config after processing layout (if any).
824 If config_path is a directory name, use default base name
825 of the config file.
826 layout:
827 optional configuration layout, a sequence of
828 section definitions suitable for .add_section()
829 settings:
830 optional setting overrides (dictionary).
831 The overrides are applied after loading config file.
833 """
834 # initialize option containers:
835 self.sections = []
836 self.section_descriptions = {}
837 self.section_options = {}
838 self.options = {}
839 # add options from the layout structure
840 if layout:
841 for section in layout:
842 self.add_section(*section)
843 if config_path is not None:
844 self.load(config_path)
845 for (name, value) in settings.items():
846 self[name.upper()] = value
848 def add_section(self, section, options, description=None):
849 """Define new config section
851 Parameters:
852 section - name of the config.ini section
853 options - a sequence of Option definitions.
854 Each Option definition is a sequence
855 containing class object and constructor
856 parameters, starting from the setting name:
857 setting, default, [description, [aliases]]
858 description - optional section comment
860 Note: aliases should only exist in historical options
861 for backwards compatibility - new options should
862 *not* have aliases!
864 """
865 if description or not self.section_descriptions.has_key(section):
866 self.section_descriptions[section] = description
867 for option_def in options:
868 klass = option_def[0]
869 args = option_def[1:]
870 option = klass(self, section, *args)
871 self.add_option(option)
873 def add_option(self, option):
874 """Adopt a new Option object"""
875 _section = option.section
876 _name = option.setting
877 if _section not in self.sections:
878 self.sections.append(_section)
879 _options = self._get_section_options(_section)
880 if _name not in _options:
881 _options.append(_name)
882 # (section, name) key is used for writing .ini file
883 self.options[(_section, _name)] = option
884 # make the option known under all of its A.K.A.s
885 for _name in option.aliases:
886 self.options[_name] = option
888 def update_option(self, name, klass,
889 default=NODEFAULT, description=None
890 ):
891 """Override behaviour of early created option.
893 Parameters:
894 name:
895 option name
896 klass:
897 one of the Option classes
898 default:
899 optional default value for the option
900 description:
901 optional new description for the option
903 Conversion from current option value to new class value
904 is done via string representation.
906 This method may be used to attach some brains
907 to options autocreated by UserConfig.
909 """
910 # fetch current option
911 option = self._get_option(name)
912 # compute constructor parameters
913 if default is NODEFAULT:
914 default = option.default
915 if description is None:
916 description = option.description
917 value = option.value2str(current=1)
918 # resurrect the option
919 option = klass(self, option.section, option.setting,
920 default=default, description=description)
921 # apply the value
922 option.set(value)
923 # incorporate new option
924 del self[name]
925 self.add_option(option)
927 def reset(self):
928 """Set all options to their default values"""
929 for _option in self.items():
930 _option.reset()
932 # Meant for commandline tools.
933 # Allows automatic creation of configuration files like this:
934 # roundup-server -p 8017 -u roundup --save-config
935 def getopt(self, args, short_options="", long_options=(),
936 config_load_options=("C", "config"), **options
937 ):
938 """Apply options specified in command line arguments.
940 Parameters:
941 args:
942 command line to parse (sys.argv[1:])
943 short_options:
944 optional string of letters for command line options
945 that are not config options
946 long_options:
947 optional list of names for long options
948 that are not config options
949 config_load_options:
950 two-element sequence (letter, long_option) defining
951 the options for config file. If unset, don't load
952 config file; otherwise config file is read prior
953 to applying other options. Short option letter
954 must not have a colon and long_option name must
955 not have an equal sign or '--' prefix.
956 options:
957 mapping from option names to command line option specs.
958 e.g. server_port="p:", server_user="u:"
959 Names are forced to lower case for commandline parsing
960 (long options) and to upper case to find config options.
961 Command line options accepting no value are assumed
962 to be binary and receive value 'yes'.
964 Return value: same as for python standard getopt(), except that
965 processed options are removed from returned option list.
967 """
968 # take a copy of long_options
969 long_options = list(long_options)
970 # build option lists
971 cfg_names = {}
972 booleans = []
973 for (name, letter) in options.items():
974 cfg_name = name.upper()
975 short_opt = "-" + letter[0]
976 name = name.lower().replace("_", "-")
977 cfg_names.update({short_opt: cfg_name, "--" + name: cfg_name})
979 short_options += letter
980 if letter[-1] == ":":
981 long_options.append(name + "=")
982 else:
983 booleans.append(short_opt)
984 long_options.append(name)
986 if config_load_options:
987 short_options += config_load_options[0] + ":"
988 long_options.append(config_load_options[1] + "=")
989 # compute names that will be searched in getopt return value
990 config_load_options = (
991 "-" + config_load_options[0],
992 "--" + config_load_options[1],
993 )
994 # parse command line arguments
995 optlist, args = getopt.getopt(args, short_options, long_options)
996 # load config file if requested
997 if config_load_options:
998 for option in optlist:
999 if option[0] in config_load_options:
1000 self.load_ini(option[1])
1001 optlist.remove(option)
1002 break
1003 # apply options
1004 extra_options = []
1005 for (opt, arg) in optlist:
1006 if (opt in booleans): # and not arg
1007 arg = "yes"
1008 try:
1009 name = cfg_names[opt]
1010 except KeyError:
1011 extra_options.append((opt, arg))
1012 else:
1013 self[name] = arg
1014 return (extra_options, args)
1016 # option and section locators (used in option access methods)
1018 def _get_option(self, name):
1019 try:
1020 return self.options[name]
1021 except KeyError:
1022 raise InvalidOptionError(name)
1024 def _get_section_options(self, name):
1025 return self.section_options.setdefault(name, [])
1027 def _get_unset_options(self):
1028 """Return options that need manual adjustments
1030 Return value is a dictionary where keys are section
1031 names and values are lists of option names as they
1032 appear in the config file.
1034 """
1035 need_set = {}
1036 for option in self.items():
1037 if not option.isset():
1038 need_set.setdefault(option.section, []).append(option.setting)
1039 return need_set
1041 def _adjust_options(self, config):
1042 """Load ad-hoc option definitions from ConfigParser instance."""
1043 pass
1045 def _get_name(self):
1046 """Return the service name for config file heading"""
1047 return ""
1049 # file operations
1051 def load_ini(self, config_path, defaults=None):
1052 """Set options from config.ini file in given home_dir
1054 Parameters:
1055 config_path:
1056 directory or file name of the config file.
1057 If config_path is a directory name, use default
1058 base name of the config file
1059 defaults:
1060 optional dictionary of defaults for ConfigParser
1062 Note: if home_dir does not contain config.ini file,
1063 no error is raised. Config will be reset to defaults.
1065 """
1066 if os.path.isdir(config_path):
1067 home_dir = config_path
1068 config_path = os.path.join(config_path, self.INI_FILE)
1069 else:
1070 home_dir = os.path.dirname(config_path)
1071 # parse the file
1072 config_defaults = {"HOME": home_dir}
1073 if defaults:
1074 config_defaults.update(defaults)
1075 config = ConfigParser.ConfigParser(config_defaults)
1076 config.read([config_path])
1077 # .ini file loaded ok.
1078 self.HOME = home_dir
1079 self.filepath = config_path
1080 self._adjust_options(config)
1081 # set the options, starting from HOME
1082 self.reset()
1083 for option in self.items():
1084 option.load_ini(config)
1086 def load(self, home_dir):
1087 """Load configuration settings from home_dir"""
1088 self.load_ini(home_dir)
1090 def save(self, ini_file=None):
1091 """Write current configuration to .ini file
1093 'ini_file' argument, if passed, must be valid full path
1094 to the file to write. If omitted, default file in current
1095 HOME is created.
1097 If the file to write already exists, it is saved with '.bak'
1098 extension.
1100 """
1101 if ini_file is None:
1102 ini_file = self.filepath
1103 _tmp_file = os.path.splitext(ini_file)[0]
1104 _bak_file = _tmp_file + ".bak"
1105 _tmp_file = _tmp_file + ".tmp"
1106 _fp = file(_tmp_file, "wt")
1107 _fp.write("# %s configuration file\n" % self._get_name())
1108 _fp.write("# Autogenerated at %s\n" % time.asctime())
1109 need_set = self._get_unset_options()
1110 if need_set:
1111 _fp.write("\n# WARNING! Following options need adjustments:\n")
1112 for section, options in need_set.items():
1113 _fp.write("# [%s]: %s\n" % (section, ", ".join(options)))
1114 for section in self.sections:
1115 comment = self.section_descriptions.get(section, None)
1116 if comment:
1117 _fp.write("\n# ".join([""] + comment.split("\n")) +"\n")
1118 else:
1119 # no section comment - just leave a blank line between sections
1120 _fp.write("\n")
1121 _fp.write("[%s]\n" % section)
1122 for option in self._get_section_options(section):
1123 _fp.write("\n" + self.options[(section, option)].format())
1124 _fp.close()
1125 if os.access(ini_file, os.F_OK):
1126 if os.access(_bak_file, os.F_OK):
1127 os.remove(_bak_file)
1128 os.rename(ini_file, _bak_file)
1129 os.rename(_tmp_file, ini_file)
1131 # container emulation
1133 def __len__(self):
1134 return len(self.items())
1136 def __getitem__(self, name):
1137 if name == "HOME":
1138 return self.HOME
1139 else:
1140 return self._get_option(name).get()
1142 def __setitem__(self, name, value):
1143 if name == "HOME":
1144 self.HOME = value
1145 else:
1146 self._get_option(name).set(value)
1148 def __delitem__(self, name):
1149 _option = self._get_option(name)
1150 _section = _option.section
1151 _name = _option.setting
1152 self._get_section_options(_section).remove(_name)
1153 del self.options[(_section, _name)]
1154 for _alias in _option.aliases:
1155 del self.options[_alias]
1157 def items(self):
1158 """Return the list of Option objects, in .ini file order
1160 Note that HOME is not included in this list
1161 because it is builtin pseudo-option, not a real Option
1162 object loaded from or saved to .ini file.
1164 """
1165 return [self.options[(_section, _name)]
1166 for _section in self.sections
1167 for _name in self._get_section_options(_section)
1168 ]
1170 def keys(self):
1171 """Return the list of "canonical" names of the options
1173 Unlike .items(), this list also includes HOME
1175 """
1176 return ["HOME"] + [_option.name for _option in self.items()]
1178 # .values() is not implemented because i am not sure what should be
1179 # the values returned from this method: Option instances or config values?
1181 # attribute emulation
1183 def __setattr__(self, name, value):
1184 if self.__dict__.has_key(name) or hasattr(self.__class__, name):
1185 self.__dict__[name] = value
1186 else:
1187 self._get_option(name).set(value)
1189 # Note: __getattr__ is not symmetric to __setattr__:
1190 # self.__dict__ lookup is done before calling this method
1191 def __getattr__(self, name):
1192 return self[name]
1194 class UserConfig(Config):
1196 """Configuration for user extensions.
1198 Instances of this class have no predefined configuration layout.
1199 Options are created on the fly for each setting present in the
1200 config file.
1202 """
1204 def _adjust_options(self, config):
1205 # config defaults appear in all sections.
1206 # we'll need to filter them out.
1207 defaults = config.defaults().keys()
1208 # see what options are already defined and add missing ones
1209 preset = [(option.section, option.setting) for option in self.items()]
1210 for section in config.sections():
1211 for name in config.options(section):
1212 if ((section, name) not in preset) \
1213 and (name not in defaults):
1214 self.add_option(Option(self, section, name))
1216 class CoreConfig(Config):
1218 """Roundup instance configuration.
1220 Core config has a predefined layout (see the SETTINGS structure),
1221 supports loading of old-style pythonic configurations and holds
1222 three additional attributes:
1223 logging:
1224 instance logging engine, from standard python logging module
1225 or minimalistic logger implemented in Roundup
1226 detectors:
1227 user-defined configuration for detectors
1228 ext:
1229 user-defined configuration for extensions
1231 """
1233 # module name for old style configuration
1234 PYCONFIG = "config"
1235 # user configs
1236 ext = None
1237 detectors = None
1239 def __init__(self, home_dir=None, settings={}):
1240 Config.__init__(self, home_dir, layout=SETTINGS, settings=settings)
1241 # load the config if home_dir given
1242 if home_dir is None:
1243 self.init_logging()
1245 def _get_unset_options(self):
1246 need_set = Config._get_unset_options(self)
1247 # remove MAIL_PASSWORD if MAIL_USER is empty
1248 if "password" in need_set.get("mail", []):
1249 if not self["MAIL_USERNAME"]:
1250 settings = need_set["mail"]
1251 settings.remove("password")
1252 if not settings:
1253 del need_set["mail"]
1254 return need_set
1256 def _get_name(self):
1257 return self["TRACKER_NAME"]
1259 def reset(self):
1260 Config.reset(self)
1261 if self.ext:
1262 self.ext.reset()
1263 if self.detectors:
1264 self.detectors.reset()
1265 self.init_logging()
1267 def init_logging(self):
1268 _file = self["LOGGING_CONFIG"]
1269 if _file and os.path.isfile(_file):
1270 logging.config.fileConfig(_file)
1271 return
1273 _file = self["LOGGING_FILENAME"]
1274 # set file & level on the root logger
1275 logger = logging.getLogger()
1276 if _file:
1277 hdlr = logging.FileHandler(_file)
1278 else:
1279 hdlr = logging.StreamHandler(sys.stdout)
1280 formatter = logging.Formatter(
1281 '%(asctime)s %(levelname)s %(message)s')
1282 hdlr.setFormatter(formatter)
1283 # no logging API to remove all existing handlers!?!
1284 logger.handlers = [hdlr]
1285 logger.setLevel(logging._levelNames[self["LOGGING_LEVEL"] or "ERROR"])
1287 def load(self, home_dir):
1288 """Load configuration from path designated by home_dir argument"""
1289 if os.path.isfile(os.path.join(home_dir, self.INI_FILE)):
1290 self.load_ini(home_dir)
1291 else:
1292 self.load_pyconfig(home_dir)
1293 self.init_logging()
1294 self.ext = UserConfig(os.path.join(home_dir, "extensions"))
1295 self.detectors = UserConfig(os.path.join(home_dir, "detectors"))
1297 def load_ini(self, home_dir, defaults=None):
1298 """Set options from config.ini file in given home_dir directory"""
1299 config_defaults = {"TRACKER_HOME": home_dir}
1300 if defaults:
1301 config_defaults.update(defaults)
1302 Config.load_ini(self, home_dir, config_defaults)
1304 def load_pyconfig(self, home_dir):
1305 """Set options from config.py file in given home_dir directory"""
1306 # try to locate and import the module
1307 _mod_fp = None
1308 try:
1309 try:
1310 _module = imp.find_module(self.PYCONFIG, [home_dir])
1311 _mod_fp = _module[0]
1312 _config = imp.load_module(self.PYCONFIG, *_module)
1313 except ImportError:
1314 raise NoConfigError(home_dir)
1315 finally:
1316 if _mod_fp is not None:
1317 _mod_fp.close()
1318 # module loaded ok. set the options, starting from HOME
1319 self.reset()
1320 self.HOME = home_dir
1321 for _option in self.items():
1322 _option.load_pyconfig(_config)
1323 # backward compatibility:
1324 # SMTP login parameters were specified as a tuple in old style configs
1325 # convert them to new plain string options
1326 _mailuser = getattr(_config, "MAILUSER", ())
1327 if len(_mailuser) > 0:
1328 self.MAIL_USERNAME = _mailuser[0]
1329 if len(_mailuser) > 1:
1330 self.MAIL_PASSWORD = _mailuser[1]
1332 # in this config, HOME is also known as TRACKER_HOME
1333 def __getitem__(self, name):
1334 if name == "TRACKER_HOME":
1335 return self.HOME
1336 else:
1337 return Config.__getitem__(self, name)
1339 def __setitem__(self, name, value):
1340 if name == "TRACKER_HOME":
1341 self.HOME = value
1342 else:
1343 self._get_option(name).set(value)
1345 def __setattr__(self, name, value):
1346 if name == "TRACKER_HOME":
1347 self.__dict__["HOME"] = value
1348 else:
1349 Config.__setattr__(self, name, value)
1351 # vim: set et sts=4 sw=4 :